Electromagnetic induction heating equipment

Abstract

The utility model discloses electromagnetic induction heating equipment, which relates to the technical field of steel pipe quenching and tempering, and comprises a roller way and a plurality of heating units, the roller way comprises a plurality of conveying roller units arranged side by side, and a mounting gap is formed between every two adjacent conveying roller units. The heating units are respectively arranged at the corresponding mounting gaps; the heating unit comprises a jacking mechanism and at least two electromagnetic coils with different specifications, the electromagnetic coils are arranged on the jacking mechanism from bottom to top, and central shafts of coil holes of the electromagnetic coils are parallel to the conveying direction of the conveying roller unit; the conveying roller units are matched with one another to be used for conveying steel pipes, and the jacking mechanism is used for driving all the electromagnetic coils to move up and down so that the conveyed steel pipes can penetrate through the corresponding electromagnetic coils to be heated. The electromagnetic induction heating equipment provided by the utility model can meet the use requirements of steel pipes in different specification ranges, and the use range of the equipment is expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe quenching and tempering treatment, in particular to electromagnetic induction heating equipment. Background Art

[0002] At present, electromagnetic induction heating equipment is commonly used in steel pipe tempering production lines to heat steel pipes so that the temperature of the steel pipes can meet the process requirements of the tempering treatment. When heating the steel pipe, the steel pipe needs to pass through the coil hole of the electromagnetic coil of the electromagnetic induction heating equipment, and the electromagnetic induction heating equipment is controlled by the control unit to connect to a high-power power supply, and the high-power electromagnetic waves generated by the electromagnetic coil are used to generate electromagnetic excitation on the steel pipe in the coil hole, so that the steel pipe itself generates heat, thereby achieving the purpose of heating the steel pipe.

[0003] However, the existing electromagnetic induction heating equipment is only provided with an electromagnetic coil of one specification, and the electromagnetic coil can only heat steel pipes within the corresponding specification range, and cannot heat steel pipes outside the specification range, which greatly limits the scope of use of the electromagnetic induction heating equipment. Utility Model Content

[0004] In view of the above defects in the prior art, the utility model aims to provide an electromagnetic induction heating device, which can meet the use requirements of steel pipes within different specifications and greatly expand the scope of use.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] An electromagnetic induction heating device comprises a roller table and a plurality of heating units, wherein the roller table comprises a plurality of conveying roller units arranged side by side, an installation gap is formed between each two adjacent conveying roller units, and each heating unit is respectively arranged at the corresponding installation gap; the heating unit comprises a lifting mechanism, and at least two electromagnetic coils of different specifications arranged on the lifting mechanism from bottom to top, and the central axis of the coil hole of the electromagnetic coil is parallel to the conveying direction of the conveying roller unit; each conveying roller unit cooperates with each other to convey steel pipes, and the lifting mechanism is used to drive all the electromagnetic coils to move up and down so that the conveyed steel pipes pass through the corresponding electromagnetic coils for heating.

[0007] Among them, there are two electromagnetic coils, which are a large-sized electromagnetic coil and a small-sized electromagnetic coil respectively; a support frame is provided on the lifting mechanism, and the large-sized electromagnetic coil and the small-sized electromagnetic coil are both arranged on the support frame, and the large-sized electromagnetic coil is located below the small-sized electromagnetic coil.

[0008] Wherein, the lifting mechanism is a cylinder or a hydraulic cylinder, a supporting plate is arranged on the piston rod of the cylinder or the hydraulic cylinder, and the support frame is arranged on the supporting plate.

[0009] Wherein, the conveying roller unit includes a roller bracket and a conveying roller rotatably arranged on the roller bracket.

[0010] Wherein, the electromagnetic induction heating device further comprises a driving mechanism for driving all the conveying rollers to rotate.

[0011] Wherein, the driving mechanism comprises a motor, a driving sprocket arranged on the motor, a driven sprocket arranged on each of the conveying rollers, and a chain wound around the driving sprocket and all the driven sprockets.

[0012] Wherein, the electromagnetic induction heating equipment further comprises a workbench, and the lifting mechanism and the conveying roller unit are both arranged on the workbench.

[0013] Wherein, a movable guide structure is arranged between the supporting plate and the workbench.

[0014] Wherein, the movable guide structure includes a guide column arranged on the supporting plate and a guide hole arranged on the workbench, and the guide column is slidably arranged in the guide hole.

[0015] Wherein, the workbench is also provided with a temperature measuring instrument for detecting the temperature of the steel pipe.

[0016] By adopting the above technical solution, the beneficial effects of the utility model are:

[0017] The electromagnetic induction heating device provided by the utility model has a heating unit including a lifting mechanism and at least two electromagnetic coils of different specifications arranged on the lifting mechanism from bottom to top. Therefore, when heating a steel pipe, the electromagnetic coil matching the steel pipe can be determined according to the specifications of the steel pipe, and then the electromagnetic coil is driven up or down by the lifting mechanism to make the electromagnetic coil correspond to the roller, and then the steel pipe is heated by the electromagnetic coil. Compared with the prior art, the electromagnetic induction heating device of the utility model has a simple structure and is easy to operate, and can meet the use requirements of steel pipes within different specifications, greatly expanding the scope of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a partial structural schematic diagram of the electromagnetic induction heating device of the utility model;

[0019] In the figure: 1. Heating unit; 11. Lifting mechanism; 12. Large electromagnetic coil; 13. Small electromagnetic coil; 14. Support frame; 15. Support plate; 16. Guide column; 2. Conveyor roller unit; 21. Roller bracket; 22. Conveyor roller; 3. Steel pipe; 4. Workbench; 41. Guide hole. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] like Figure 1 As shown, this embodiment discloses an electromagnetic induction heating device, including a roller table and a plurality of heating units 1, the roller table includes a plurality of conveying roller units 2 arranged side by side, an installation gap is formed between each adjacent two conveying roller units 2, and each heating unit 1 is respectively arranged at the corresponding installation gap; the heating unit 1 includes a lifting mechanism 11, and at least two electromagnetic coils of different specifications arranged on the lifting mechanism 11 from bottom to top, and the central axis of the coil hole of the electromagnetic coil is parallel to the conveying direction of the conveying roller unit 2; the conveying roller units 2 cooperate with each other to convey the steel pipe 3, and the lifting mechanism 11 is used to drive all the electromagnetic coils to move up and down so that the conveyed steel pipe 3 passes through the corresponding electromagnetic coil for heating.

[0022] The electromagnetic induction heating device in this embodiment can first determine the electromagnetic coil that matches the steel pipe 3 according to the specifications of the steel pipe 3, and then the lifting mechanism 11 drives the electromagnetic coil to rise or fall so that the electromagnetic coil corresponds to the roller, and then the steel pipe 3 is heated by the electromagnetic coil. Compared with the prior art, the electromagnetic induction heating device has a simple structure and is easy to operate. It can meet the use requirements of steel pipes 3 within different specifications and greatly expands the scope of use.

[0023] It should be noted that the specification of the electromagnetic coil in this embodiment is based on the aperture of the coil hole of the electromagnetic coil, that is, the diameter specification of the coil hole; correspondingly, the specification of the steel pipe 3 is also based on the diameter of the steel pipe 3, that is, the diameter specification of the steel pipe 3.

[0024] In this embodiment, two electromagnetic coils are provided, namely a large-sized electromagnetic coil 12 and a small-sized electromagnetic coil 13; a support frame 14 is provided on the lifting mechanism 11, and the large-sized electromagnetic coil 12 and the small-sized electromagnetic coil 13 are both arranged on the support frame 14, and the large-sized electromagnetic coil 12 is located below the small-sized electromagnetic coil 13. Of course, the large-sized electromagnetic coil 12 can also be arranged above the small-sized electromagnetic coil 13, and this embodiment does not limit this.

[0025] The large-sized electromagnetic coil 12 and the small-sized electromagnetic coil 13 are driven up and down by the lifting mechanism 11, which not only realizes the selection of the large-sized electromagnetic coil 12 or the small-sized electromagnetic coil 13, meets the use requirements of the steel pipe 3 within different specifications and expands the scope of use, but also makes full use of the upper space of the workplace, reduces the floor space and improves the space utilization rate of the workplace.

[0026] The lifting mechanism 11 in this embodiment is a cylinder or a hydraulic cylinder, a support plate 15 is arranged on the piston rod of the cylinder or the hydraulic cylinder, and the support frame 14 is arranged on the support plate 15. By arranging the support plate 15, the stability of the connection is improved.

[0027] The conveying roller unit 2 in this embodiment includes a roller bracket 21 and a conveying roller 22 rotatably disposed on the roller bracket 21 .

[0028] Since the V-shaped roller can concentrate the steel pipe 3 in the middle thereof and prevent the steel pipe 3 from rolling down during transportation, thereby improving the stability of the steel pipe 3 during tempering treatment, the conveying roller 22 in this embodiment is preferably a V-shaped roller, and mounting shafts are respectively provided at both ends of the V-shaped roller, and the two mounting shafts are respectively rotatably mounted on the roller bracket 21.

[0029] The electromagnetic induction heating device in this embodiment also includes a driving mechanism (not shown in the figure) for driving all the conveying rollers 22 to rotate. The driving mechanism can adopt a chain drive structure or a belt drive mechanism. Since the chain drive mechanism has no sliding and high transmission efficiency, it can be used in harsh environments. Therefore, the driving mechanism in this embodiment is preferably a chain drive mechanism.

[0030] Specifically, the driving mechanism includes a motor, a driving sprocket disposed on the motor, a driven sprocket disposed on each conveying roller 22, and a chain wound around the driving sprocket and all the driven sprockets.

[0031] The electromagnetic induction heating device in this embodiment further includes a workbench 4 , on which the lifting mechanism 11 and the roller bracket 21 of the conveying roller unit 2 are both arranged.

[0032] In order to ensure the linearity of the up and down movement of the electromagnetic coil, a movable guide structure is provided between the supporting plate 15 and the workbench 4 in this embodiment.

[0033] Specifically, the movable guide structure includes a guide column 16 disposed on the supporting plate 15 and a guide hole 41 disposed on the workbench 4 , and the guide column 16 is slidably disposed in the guide hole 41 .

[0034] The workbench 4 of this embodiment is also provided with a temperature measuring instrument (not shown in the figure) for detecting the temperature of the steel pipe 3 .

[0035] Specifically, there are two groups of thermometers, which are upstream thermometers and downstream thermometers. The upstream thermometer is installed on the upstream side of the roller, and is used to measure the temperature of the steel pipe 3 that is about to enter the electromagnetic induction heating device to obtain the temperature of the steel pipe 3 before heating; the downstream thermometer is installed on the downstream side of the roller, and is used to measure the temperature of the steel pipe 3 that has been heated to obtain the temperature of the steel pipe 3 after heating.

[0036] The upstream temperature measuring instrument and the downstream temperature measuring instrument are both electrically connected to the control unit of the electromagnetic induction heating device, and the control unit can obtain the temperature before heating and the temperature after heating of the steel pipe 3 through the upstream temperature measuring instrument and the downstream temperature measuring instrument, respectively.

[0037] It should be noted that the upstream side and downstream side of the roller here refer to the production line. Specifically, the upstream side refers to the side where the steel pipe 3 is input, and the downstream side refers to the side where the steel pipe 3 is output.

[0038] When in use, first determine the specifications of the steel pipe 3 to be heated, and then select the electromagnetic coil of the corresponding specification according to the specifications of the steel pipe 3. When selecting the electromagnetic coil, the lifting mechanism 11 drives all the electromagnetic coils to move up and down so that the electromagnetic coils of this specification correspond to the roller; then, under the control of the control unit, the roller conveys the steel pipe 3 at a uniform speed to the coil holes of each electromagnetic coil corresponding to the roller, and the electromagnetic coil heats the steel pipe 3.

[0039] During the entire heating process of the steel pipe 3, the control unit will control the heating temperature of the steel pipe 3 by the electromagnetic coil in real time according to the temperature signal fed back by the upstream temperature meter, so that the steel pipe 3 reaches the target heating temperature; the control unit will adjust the heating power of the electromagnetic coil in real time according to the temperature signal fed back by the downstream temperature meter, thereby improving the consistency of the subsequent heating temperature of the steel pipe 3 and reducing the deviation from the target heating temperature.

[0040] The above is a preferred embodiment of the electromagnetic induction heating device of the utility model, and there are more embodiments that will not be described in detail here. The utility model is not limited to the above embodiment, and various changes made by ordinary technicians in this field based on the above concept without creative labor are all within the protection scope of the utility model.

Claims

1. An electromagnetic induction heating device, characterized in that: It comprises a roller conveyor and a plurality of heating units, wherein the roller conveyor comprises a plurality of conveying roller units arranged side by side, an installation gap is formed between each two adjacent conveying roller units, and each of the heating units is respectively arranged at the corresponding installation gap; The heating unit includes a lifting mechanism, and at least two electromagnetic coils of different specifications arranged on the lifting mechanism from bottom to top, and the central axis of the coil hole of the electromagnetic coil is parallel to the conveying direction of the conveying roller unit; each conveying roller unit cooperates with each other to convey the steel pipe, and the lifting mechanism is used to drive all the electromagnetic coils to move up and down so that the conveyed steel pipe passes through the corresponding electromagnetic coil for heating.

2. The electromagnetic induction heating device according to claim 1, characterized in that: There are two electromagnetic coils, which are a large-sized electromagnetic coil and a small-sized electromagnetic coil respectively; a support frame is provided on the lifting mechanism, and the large-sized electromagnetic coil and the small-sized electromagnetic coil are both arranged on the support frame, and the large-sized electromagnetic coil is located below the small-sized electromagnetic coil.

3. The electromagnetic induction heating device according to claim 2, characterized in that: The lifting mechanism is a pneumatic cylinder or a hydraulic cylinder, a supporting plate is arranged on the piston rod of the pneumatic cylinder or the hydraulic cylinder, and the supporting frame is arranged on the supporting plate.

4. The electromagnetic induction heating device according to claim 1, characterized in that: The conveying roller unit includes a roller bracket and a conveying roller rotatably disposed on the roller bracket.

5. The electromagnetic induction heating device according to claim 4, characterized in that: The electromagnetic induction heating device further comprises a driving mechanism for driving all the conveying rollers to rotate.

6. The electromagnetic induction heating device according to claim 5, characterized in that: The driving mechanism comprises a motor, a driving sprocket arranged on the motor, a driven sprocket arranged on each of the conveying rollers, and a chain wound around the driving sprocket and all the driven sprockets.

7. The electromagnetic induction heating device according to claim 3, characterized in that: The electromagnetic induction heating device further comprises a workbench, and the lifting mechanism and the conveying roller unit are both arranged on the workbench.

8. The electromagnetic induction heating device according to claim 7, characterized in that: A movable guide structure is arranged between the supporting plate and the workbench.

9. The electromagnetic induction heating device according to claim 8, characterized in that: The movable guide structure comprises a guide column arranged on the supporting plate and a guide hole arranged on the workbench, and the guide column is slidably arranged in the guide hole.

10. The electromagnetic induction heating device according to claim 7, characterized in that: The workbench is also provided with a temperature measuring instrument for detecting the temperature of the steel pipe.

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